Originally posted by LeoZeppelin
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Cricket sound with Fender Blues Deluxe Reissue Amp
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Sorry if I wasn't too clear before. When I was talking about Preamp Out and PowerAmp In, there are a few things to check that can help...
1. Use some contact clear (or even 91% rubbing alcohol) and clean the contacts on both jacks - see if that makes a difference (probably won't, but doesn't hurt)
Next two operations require another amp with pre-out and post-in loop.
2. Connect Preamp Out from known-good amp to PowerAmp In of "cricket amp" - if noise is not apparent, then the problem is with the preamp section of the bad amp.
3. Connect Preamp Out from "cricket amp" to PowerAmp In of known-good amp - if noise is not apparent, then the problem is in power amp section of bad amp.
This doesn't identify the problem, just narrows the search.
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Recorded clip of amp's noise and cricket sound
Thanks Zipslack.
I only have one amp, so my options are very limited.
Anyhow, I've been sitting here for over 3 hours trying to reproduce the cricket noise but it is so sporadic that it shows up at its own time. Generally it only takes 20-30 minutes. But, now that the cricket noise is not there, I can hear and focus on the amp's noise. It is like a 60hz noise not the hiss. Very annoying and gets worse with the overdrive/muddy channel. I did record it using my cheap mic.
I recorded -- Over clean channel, Input 1, Input 2, Power Amp In, Muddy channel, with overdrive (BK Butler Tube Drive) on Single coil, I switched to the humbuckers to show that it reduces the noise a bit. Additionally, I know that putting a guitar parallel to the amp gives feedback and it gets better as we move it perpendicular but it should not be this horrible anyway. Please check the clip and see if it gives you any idea:
zSHARE - jj.mp3
Imagine this sound with Phaser ...especially over the muddy channel. You can't play that kind of sound phasing in and out on stage. The noise is worst in Input 1 and kind of lower in Input 2 and Power Amp In. Humbuckers sound way quieter than the single coils...which also should not happen this horribly. Overdrive and muddy channel just amplify the noise considerably higher and you can hear the hints of the cricket sound.
Sorry about the mic but the noise is much more annoying and amplified actually than what you hear on the recording.
Here is a clip of cricket sound that I recorded on Saturday:
zSHARE - newfile48-cutmp3.net.mp3
This cricket sound kind of sounds like an irritated version of the amp's noise from the earlier clip. Doesn't it?
I don't know if it gives you some idea or not about what/where the problem could be. Looking for suggestions/advice.
Thanks.
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I haven't listened to the sound clips but from what you describe I think the problem could be a bad electrical connection somewhere like a bad solder joint. This would be consistent with the somewhat intermittent nature of the problem. Trying to find it could be like trying to find a needle in a haystack.
I believe you've tried all sorts of different tubes and you still have the problem so it isn't likely the tubes.
It would be a lot easier to just take it back and exchange it for one that works and save yourself all this headache. If you do start trying to resolder suspect connections you'll likely void your warranty so that isn't a good idea.
Greg
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Originally posted by GregS View PostI haven't listened to the sound clips but from what you describe I think the problem could be a bad electrical connection somewhere like a bad solder joint. This would be consistent with the somewhat intermittent nature of the problem. Trying to find it could be like trying to find a needle in a haystack.
I believe you've tried all sorts of different tubes and you still have the problem so it isn't likely the tubes.
It would be a lot easier to just take it back and exchange it for one that works and save yourself all this headache. If you do start trying to resolder suspect connections you'll likely void your warranty so that isn't a good idea.
Greg
Thanks.
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Well I know you might not want to hear this, but the first sound clip (nice job documenting the changes as you went by the way) sounds an awful lot like a problem in the guitar or cable, though I suppose it could also conceivably be caused by a poor ground in the amp. The effects of the different inputs and tube driver effect on the sound all seem to me to point at noise being introduced into the amp, rather than being created by it.
I have experienced very similar noise problems in a particular venue where it seemed nothing could be done and the noise was present to some extent in 2 different guitar rigs with multiple guitars & and also in the bass rig, so I know such areas of heavy interference exist.
Regarding the cricket noises in the second clip: Any cell phones, cordless phones, motors (such as in a furnace or pump), computer equipment, or the like anywhere in the vicinity?
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Wow! The amp is dead quite when the guitar is unplugged, thats a big clue!
Ok so you get the noise when :
the guitar is plugged in
you are not playing
and when you are playing
with mutilple guitars
and in multiple places
and you dont have any secret electronic ships placed in your body for government tracing and general mind control?
You dont get the noise with
the guitar unplugged?
when the pre-amp volume control is turned all the way down?
So either the problem is the guitars and environment or connections on the input jacks leading to the first valve input. you now need to decide what you are going to do.
if you are not happy to do any soldering yourself, and throw the warranty out the window, there is no point going any further, take the amp and guitars to the shop or a reliable amp tech to get it sorted out.
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Originally posted by Mark Black View PostWell I know you might not want to hear this, but the first sound clip (nice job documenting the changes as you went by the way) sounds an awful lot like a problem in the guitar or cable, though I suppose it could also conceivably be caused by a poor ground in the amp.
I have a rarely used monster cable and another one I got from GC. Both are good...not that cables could not be an issue. Funny thing is that I have never tried another guitar cuz I own only 1 guitar. It is also from last year a Gibson LP. I would hope there is no problems with it because that would disastrous...faulty expensive gear! Ground, good point. I will mention that when/if I have to send it to Fender.
Regarding the cricket noises in the second clip: Any cell phones, cordless phones, motors (such as in a furnace or pump), computer equipment, or the like anywhere in the vicinity?
I called Fender and planning to drive over 2 hours to hand it over myself to the closest recommended repair shop and collect it too...to make sure that there is no noise at all. I will do that in case nothing else here works. Although, that will be my last resort.
Thanks.
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Thanks for replying!
Originally posted by guitarmike2107 View PostWow! The amp is dead quite when the guitar is unplugged, thats a big clue!
Ok so you get the noise when :
the guitar is plugged in
you are not playingand when you are playing
with mutilple guitars
and in multiple places
and you dont have any secret electronic ships placed in your body for government tracing and general mind control?
You dont get the noise with
the guitar unplugged?
when the pre-amp volume control is turned all the way down?
if you are not happy to do any soldering yourself, and throw the warranty out the window, there is no point going any further, take the amp and guitars to the shop or a reliable amp tech to get it sorted out.
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Have you placed your cell phone near the amp? Or in your pocket while playing?
Are you close to a wi-fi router, bluetooth thingy, etc?
Anything with a radio transmitter in it can potentially inject weird noises into your amp. The fact that it doesn't do it at Guitar Center or your practice room adds more weight to this theory."Enzo, I see that you replied parasitic oscillations. Is that a hypothesis? Or is that your amazing metal band I should check out?"
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Originally posted by Steve Conner View PostHave you placed your cell phone near the amp? Or in your pocket while playing?
Are you close to a wi-fi router, bluetooth thingy, etc?
Anything with a radio transmitter in it can potentially inject weird noises into your amp. The fact that it doesn't do it at Guitar Center or your practice room adds more weight to this theory.
I kind of do understand that the noise is either from the amp or from the guitar/cables....chances are that it is from the amp. If not tubes, then it is something in the circuit. The electronics around it might be contributing to it to some extent but they do not seem to be the cause of its initiation.
Thanks.
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Here's what I did to solve this issue with my Blues deluxe. (Whether anyone wants to admit it or not, this is a common issue with many fender models. My friend has the same problem with his pro junior.) I bought two 112 fender speaker extension cabinets. I uplugged the speaker in the cabinet with the power amp and plug the extension cabinets in only. This exterminates the crickett issue. You can even put the combo amp on top of one of the speaker cabinets without experiencing the crickett issue. The only time this problem exsists, is when the speaker is used that is mounted inside the combo amp. Obviously this speaker is vibrating one of the amp's components enough to create an extremely annoying audiable crickett sound in the amp's output section.
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